diff -r 000000000000 -r 6474c204b198 dom/workers/test/WorkerTest.jsm
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/workers/test/WorkerTest.jsm	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,17 @@
+/**
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+this.EXPORTED_SYMBOLS = [
+  "WorkerTest"
+];
+
+this.WorkerTest = {
+  go: function(message, messageCallback, errorCallback) {
+    let worker = new ChromeWorker("WorkerTest_worker.js");
+    worker.onmessage = messageCallback;
+    worker.onerror = errorCallback;
+    worker.postMessage(message);
+    return worker;
+  }
+};